✅ A. Multiple Choice Questions
1. To provide healthy and safety working environment, every organisation must have ___________________.
(a) Cleanliness
(b) Filtered water
(c) Clean wash-room
(d) All of the above
Answer: (d) All of the above
2. Air pollution is mostly caused by production of the ________ in the surrounding air.
(a) dust
(b) mixture of solid particles
(c) gases
(d) All of above
Answer: (d) All of above
3. Repetitive use of muscle may feel pain in your ___________.
(a) neck
(b) shoulder
(c) wrist or fingers
(d) All of the above
Answer: (d) All of the above
4. The security department organisation is not responsible for __________________.
(a) other safety
(b) computer system safety
(c) electrical safety
(d) transport safety
Answer: (d) transport safety
5. For an organisation, the proper security procedures will reduce ________________.
(a) liabilities
(b) insurance
(c) business revenue
(d) operational charges of the company
Answer: (a) liabilities
6. Do not wear ________ when working with machines.
(a) jewellery
(b) safety glasses
(c) masks
(d) gloves
Answer: (a) jewellery
7. Sore lower back is caused due to _________________.
(a) reaching forward frequently
(b) no lumbar support
(c) no upper back support from chair
(d) reaching forward for long periods
Answer: (b) no lumbar support
8. What should you do with the problem of dry eyes?
(a) Forget to blink
(b) Rest eyes periodically and do simple eye exercises
(c) Do exercise
(d) Blink the eyes
Answer: (b) Rest eyes periodically and do simple eye exercises
9. If light is coming directly behind or in front of you then you may suffer from __________________.
(a) eye strain
(b) sore eyes
(c) dry eyes
(d) eye strain and sore eyes
Answer: (d) eye strain and sore eyes
✅ B. Fill in the Blanks
1. Air and water pollution can be analysed by using – physical, _________ and ____________ analysis.
Answer: chemical, biological
2. The PH value of the water can be measured through __________ analysis.
Answer: chemical
3. The _________ indicators are used to monitor the health of the ecosystem.
Answer: biological
4. Ergonomics is the science concerned with _________ and arranging things.
Answer: designing
5. Working with wrists extended too much repetition can cause ___________.
Answer: strain injury / RSI
6. The repetition of a seemingly _________ task over a period of time can cause an injury.
Answer: simple
7. If a cord or wire will cross a pathway safety it should be mark it with ___________.
Answer: tape
8. Loose cords and wires can cause _____________.
Answer: tripping
9. Glare and __________ on the screen should be prevented.
Answer: reflection
10. The keyboard should have a matt surface to avoid ____________ glare.
Answer: reflective
✅ C. True / False
1. The work environment of the organisation must be free from hazards and risk.
Answer: True
2. Practice a no vehicle day in every week to avoid air pollution.
Answer: True
3. Applying ergonomics can improve performance and productivity.
Answer: True
4. Wear rings, watches and necklaces while working on the computer.
Answer: False
5. Never touch or try repairing any electrical equipment or circuits with wet hands.
Answer: True
6. Unplug all power sources and cables from computer while working on computer.
Answer: True
7. Occupational overuse syndrome, also known as repetition strain injury.
Answer: True
8. The work chair must be stable and allow the user to move easily.
Answer: True
9. Artificial lighting from computer screens can cause sleeping problems.
Answer: True
10. The keyboard and mouse should not be kept at the same level.
Answer: False
✅ D. Short Answer Type Questions
1. What causes the water pollution?
Answer:
- Discharge of industrial waste
- Disposal of chemicals and sewage
- Agricultural runoff (pesticides, fertilizers)
- Dumping of plastics and garbage
- Oil spills and toxic substances
2. What is occupational overuse syndrome?
Answer:
- It is a condition caused by repetitive movements of muscles.
- Leads to pain, swelling, stiffness, and weakness.
- Also known as Repetitive Strain Injury (RSI).
3. What are musculoskeletal problems?
Answer:
- Problems affecting muscles, bones, tendons and joints.
- Include back pain, neck pain, shoulder pain, and wrist pain.
- Often caused due to poor posture and long sitting hours.
4. What cautions to be taken while working on the computer?
Answer:
- Maintain correct sitting posture.
- Keep screen at eye level.
- Take regular breaks.
- Avoid glare and reflection.
- Ensure proper lighting.
- Avoid bending wrists while typing.
5. Why is there no right way to use a laptop?
Answer:
- Laptop design forces screen and keyboard to be close together.
- You cannot maintain ideal posture for both neck and wrists.
- Leads to eye strain, neck strain and back pain.
6. What causes eye strain and how to avoid it?
Answer:
Causes:
- Poor lighting
- Glare on screen
- Long screen time
- Not blinking enough
Avoid by:
- Taking short breaks
- Blinking often
- Using anti-glare screen
- Adjusting brightness and contrast
- Keeping screen at proper distance
7. What type of display screen is suitable to work on computer?
Answer:
- A screen with anti-glare coating
- Proper brightness and contrast settings
- Adjustable height and angle
- LCD/LED monitor over CRT
8. What type of keyboard is suitable to work on computer?
Answer:
- A keyboard with soft keys
- Matt surface to avoid reflection
- Comfortable spacing
- Ergonomic design
- Kept at elbow height